Structural shape for beams



(No Model.)

I E. M. BUTZ. STRUCTURAL SHAPE FOR BEAMS, GIRDERS, 8w.

Patented Sept. 9, 1884.

N4 PETERS. Phnltrhihogmpher. W-uhingion, D. c.

UNITED STATES PATENT OFFICE.

EDWARD M. BUTZ, OF ALLEGHENY, PENNSYLVANIA.

STRUCTURAL SHAPE FOR BEA-MS, G'IRDERS, 840.

SPECIFICATION forming part of Letters Patent No. 304,784, datedSeptember 9, 1884.

' Application filedpecember 13, 1883. (No model.)

To all whom, it may concern.-

Beit known that I, EDWARD M. BUTZ, a citizen of the United States,residing at Allegheny, county of Allegheny, State of Pennsylvania, haveinvented or discovered a new and useful Improvement in Structural Shapesfor Beams, Girders, &c.;\and I do hereby declare the following to be afull, clear, concise, and exact description thereof, reference being hadto the accompanying drawings, making a part of this specification, inwhich-like letters i11- dicating like parts I Figure 1 is a section inperspective of a metal shape plate or bar adapted for use in beams orgirders embodying my invention; Fig. 2, a similar section of a platehaving its inclined portion bent in opposite direction to that of theplate shown in Fig. 1; and Fig. 3, a similar section ofa beam formed oftwo plates of the-shape shown in Figs. 1 and 2, united with theirinclined portions in reverse directions, respectively.

My invention relates to shapes for metal plates or bars adapted to usein beams or gird: ers for buildings and other structures; and its objectis to provide a light and strong beam having inclined sides or faces onits web, and

' suitable strengthening members above and below said inclined sides.

The improvements claimed are hereinafter fully set forth.

To carry out my invention I form of rolled metala plate, A, of theshapeinsection shown in the several figuresto wit, having a continuousbody bent into five different planes, arranged relatively as follows:The upper outer portion, a, of the plate is bent at or about at a rightangle to the adjacent upper vertical portion, a, which is substantiallyin line with the lower outer vertical portion, a, or in a planeparallel, or nearly so, therewith. The

next adjacent portion, 66*, is inclined at an obtuse angle to the uppervertical portion, a, and the next adjacent portion, a is bent so as toconnect the lower side of the inclined portion a with the upper side ofthe lower vertical portion, of. There are thus provided in the plate anupper transverse member or flange, a, an upper vertical web, a, aninclined web, a'"', a transverse web, a, and a lower vertical web, a. Aplate so shaped may be used singly as the web of a beam or girder, butis preferably employed as a member of a built or composite beam orgirder, instances of different forms of which are illustrated in Fig. 3,the same being formed by the connection of two plates of the shape abovedescribed, with their inclined portions in reverse directions,respectively, and abutting by their vertical webs.

I claim herein as my invention 1. A structural metal plate of shape orsection as described, adapted to use in a beam or girder, the samehaving a continuous body bent into five different planes, and presentingin succession a transverse flange, an upper vertical web, an inclinedweb, a transverse web, and a lower vertical web, substantially as andfor the purpose set forth.

2. The combination, in a composite beam'or girder, of two metal platesof the shape or section described, having their inclined webs bent inopposite directions, respectively, and having their vertical websabutting one against the other, substantially as set forth.

In testimony whereof I have hereunto set my hand.

EDWARD M. BUTZ.

\Vitnesses:

J. SNowDEN BELL, 1%. H. lVHITTLEsEY.

